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ibrutinib immunotherapy

Véronique Leblond, Efstathios Kastritis, Ranjana Advani, Stephen M Ansell, Christian Buske, Jorge J Castillo, Ramón García-Sanz, Morie Gertz, Eva Kimby, Charalampia Kyriakou, Giampaolo Merlini, Monique C Minnema, Pierre Morel, Enrica Morra, Mathias Rummel, Ashutosh Wechalekar, Christopher J Patterson, Steven P Treon, Meletios A Dimopoulos
Waldenström macroglobulinemia (WM) is a distinct B-cell lymphoproliferative disorder for which clearly defined criteria for the diagnosis, initiation of therapy, and treatment strategy have been proposed as part of the consensus panels of the International Workshop on Waldenström's Macroglobulinemia (IWWM). At IWWM-8, a task force for treatment recommendations was impanelled to review recently published and ongoing clinical trial data as well as the impact of new mutations (MYD88 and CXCR4) on treatment decisions, indications for B-cell receptor and proteasome inhibitors, and future clinical trial initiatives for WM patients...
September 8, 2016: Blood
Candida Vitale, Jan A Burger
INTRODUCTION: The critical role of the tissue microenvironment and B-cell receptor (BCR) signaling in chronic lymphocytic leukemia (CLL) pathogenesis, and the clinical success of targeted agents that disrupt BCR signaling are currently changing the CLL landscape. Three new drugs were recently approved for CLL therapy, and other agents are in late development. AREAS COVERED: In this review, we summarize data on promising new targeted drugs for CLL. The heterogeneous mechanisms of actions of these molecules are described, such as the inhibition of BCR signaling, direct targeting of CD20 molecules on the CLL cell surface, and BCL-2 inhibition...
June 2016: Expert Opinion on Pharmacotherapy
Kanti R Rai, Preetesh Jain
The field of chronic lymphocytic leukemia (CLL) has witnessed considerable change since the time clinical staging was introduced in clinical practice in 1975. Over the years, the prognostication in CLL has expanded with the addition in late 90s of mutational status of variable region of immunoglobulin heavy chain (IGHV), and chromosomal analyses using fluorescent in situ hybridization (FISH). More recently, stereotypy of BCR (B cell receptor) and whole exome sequencing (WES) based discovery of specific mutations such as NOTCH1, TP53, SF3B1, XPO-1, BIRC3, ATM, and RPS15 further refined the current prognostication system in CLL...
March 2016: American Journal of Hematology
Claire Dearden
B-cell (B-PLL) and T-cell (T-PLL) prolymphocytic leukemias are rare, poor-prognosis lymphoid neoplasms with similar presentation characterized by symptomatic splenomegaly and lymphocytosis. They can be distinguished from each other and from other T- and B-cell leukemias by careful evaluation of morphology, immunophenotyping, and molecular genetics. The clinical behavior is typically aggressive, although a subset of patients may have an indolent phase of variable length. First-line therapy for T-PLL is with intravenous alemtuzumab and for B-PLL is with combination purine analog-based chemo-immunotherapy...
2015: Hematology—the Education Program of the American Society of Hematology
Jingjing Wu, Jiaping Fu, Mingzhi Zhang, Delong Liu
Targeted therapy has been the forefront of cancer treatment. Cancer immunotherapy is the most recent focus. In addition, novel immunotherapeutics targeting B cell receptor signaling (e.g., ibrutinib), T cell receptor ( e.g., CART19), and NK cells (e.g., AFM13) are being developed. This review summarized the new development in blinatumomab (MT103/MEDI-538), a first-in-class bispecific T engager (BiTE) antibody against CD19/CD3 in patients with relapsed/refractory precursor B cell acute lymphoid leukemia.
2015: Journal of Hematology & Oncology
David L Tucker, Simon A Rule
Although chemo-immunotherapy remains at the forefront of first-line treatment for mantle cell lymphoma (MCL) and chronic lymphocytic leukemia (CLL), small molecules, such as ibrutinib, are beginning to play a significant role, particularly in patients with multiply relapsed or chemotherapy-refractory disease and where toxicity is an overriding concern. Ibrutinib is a first-in-class, oral inhibitor of Bruton's tyrosine kinase, which functions by irreversible inhibition of the downstream signaling pathway of the B-cell receptor, which normally promotes cell survival and proliferation...
2015: Therapeutics and Clinical Risk Management
Natalia L Komarova, Jan A Burger, Dominik Wodarz
The Bruton tyrosine kinase inhibitor (BTKi) ibrutinib is a new targeted therapy for patients with chronic lymphocytic leukemia (CLL). Ibrutinib is given orally on a continuous schedule and induces durable remissions in the majority of CLL patients. However, a small proportion of patients initially responds to the BTKi and then develops resistance. Estimating the frequency, timing, and individual risk of developing resistance to ibrutinib, therefore, would be valuable for long-term management of patients. Computational evolutionary models, based on measured kinetic parameters of patients, allow us to approach these questions and to develop a roadmap for personalized prognosis and treatment management...
September 23, 2014: Proceedings of the National Academy of Sciences of the United States of America
John C Riches, John G Gribben
Over the past decade, there have been significant advances in our understanding of the pathogenesis of chronic lymphocytic leukemia (CLL), which has been accompanied by an explosion in treatment options. Although the combination of fludarabine, cyclophosphamide, and rituximab is the current frontline treatment of choice for fit patients, targeted therapies such ibrutinib, idelalisib, and ABT-199 are showing great promise in clinical trials. However, none of these drugs seems curative, and allogeneic hematopoietic stem cell transplantation remains the only strategy that produces durable clinical remissions in otherwise poor-risk disease...
July 2014: Seminars in Hematology
Steven T Rosen, Brian K Link, Nathan H Fowler
Mantle cell lymphoma is one of the most challenging hematologic malignancies, owing to an aggressive disease course, a high rate of relapse, and lack of standard of care. In the United States, mantle cell lymphoma accounts for approximately 6% of all newly diagnosed cases of non-Hodgkin lymphoma. Because most patients are initially diagnosed with advanced-stage disease, they are often symptomatic at presentation. Common features include widespread lymphadenopathy and splenomegaly, as well as bone marrow infiltration...
November 2013: Clinical Advances in Hematology & Oncology: H&O
Xiaohui Zheng, Ning Ding, Yuqin Song, Lixia Feng, Jun Zhu
BACKGROUND: Although rituximab in the combination of CHOP chemotherapy has been widely used as the standard treatment for several kinds of B-cell non-Hodgkin lymphoma (B-NHL), a great number of B-NHL patients treated with this immunotherapy still develop primary and secondary resistance. Recently Bruton's tyrosine kinase (Btk) inhibitor ibrutinib showed promising therapeutic effect in relapsed/refractory CLL and B-cell NHL, which provided essential alternatives for these patients. METHODS: The proliferation and apoptosis induction of tumor cells were measured by cell viability assay and Annexin-V staining...
2014: Cancer Cell International
M A Kharfan-Dabaja, W G Wierda, L J N Cooper
Understanding the pathogenesis of CLL has uncovered a plethora of novel targets for human application of monoclonal antibodies, engineered T cells, or inhibitors of signal transduction pathways. The B-cell receptor signaling pathway is being actively explored as a therapeutic target in CLL. Ibrutinib, an inhibitor of Bruton's tyrosine kinase is showing impressive responses in heavily pre-treated high-risk CLL, whether alone or in combination with MoAbs or chemotherapy. Other key components of the BCR pathway, namely PI3K-δ, are also being targeted with novel therapies with promising results as well...
March 2014: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
Jan A Burger, Joseph J Buggy
Over the past 3 years, ibrutinib (PCI-32765) has emerged as a breakthrough in targeted therapy for patients with certain types of B cell malignancies. Early stage clinical trials found ibrutinib to be particularly active in chronic lymphocytic leukemia (CLL) and mantle cell lymphoma (MCL), providing the rationale for ongoing phase 3 trials. In contrast to conventional chemo-immunotherapy, ibrutinib is not myelosuppressive, and responses are not affected by disease features that predict failure to respond to or short remission durations after chemo-immunotherapy, such as del17p...
November 2013: Leukemia & Lymphoma
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